Apparatus for and method of feeding molten glass



Feb. 1, 1944;

w. BARKE-R, JR

APPARATU$ FOR AND ME'mob OF FEEDING MOLTEN GLASS-4 FiledJuly 14, 1939 sSheets-Sheet 1 Wain ess'

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w. T. BARKER s sheeis-sheet 2 Filed July 14, 1939 .ajaaa /a7 "7 77Wi'izavas I 5 75 9* k @fiflf 077a eg s 1944- W. T. BARKER, JR 2,340,729

APPARATUS FUR AND METHQD 0F FEEDING MOLTEN GLASS Filed July 14, 1939 5Sheets-Shegt .3

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W222 WZZZ? 1 w. T.BARKER, JR 2,340,729

APPARATUS FOR AND METHOD OF FEEDING MOLTEN GLASS Filed July 14, 1939 5Sheets-Sheet 4 In @9220? W'a'ZZzZzmTBa7-Z:e

Feb. 1, 1944, -w. 'r. BARKER, JR

APPARATUS FOR AND METHOD OF FEED ING MOL TEN GLASS Filed July 14, 1939 5Sheets-Sheet 5 W23 ss Patented Feb. 1, 1944 APPARATUS FOR AND METHOD OF'FEEDING MOLTEN GLASS William T. Barker, Jr., West Hartford, Conn.,

assi'gnor to Hartford-Empire Company, Hartford, Conn., a corporation ofDelaware Application July 14-, 1939, Serial No. 284,391

17 Claims. (01. 49-55) This invention relates to the art of feedingmolten glass from a supply body in a forehearth or other suitablecontainer in mold charges of suitable size, shape and condition to beformed into satisfactory articles of glassware by associate glasswareforming machinery. The invention relates more particularly to apparatusof a unitary character by which a plurality of charges of the characterdescribed are produced and delivered to associate forming machinery ateach cycle of operations of the feeding apparatus.

An object of the invention is to provide a practical, emcient andreliable automatic glass feeding apparatus having a plurality of glassfeed outlets and associate mechanisms adapted by their conjoint andcooperative functioning to produce at the same time continuous series ofcommercially satisfactory successive charges 1 and to regulably controlwithin an adequate commercial range the formation and delivery toassociate glassware forming machinery of the successive charges of eachsuch series.

Another object of the invention is. to provide a glass feeding apparatushaving a glassfeeding container provided with a plurality of glass feedoutlets and adapted by reason of the novel and improved character of thecoordinated, cooperative glass feed control, charge severing, and chargedelivery features of such apparatus to produce and deliver to moldcavities of an associate glassware forming machine as many regularseries of mold charges of predetermined, dependably maintained,regulable size and shape and of suitable thermal condition as there arefeed outlets in the apparatus.

A further object of the invention is to provide an improved glassfeeding apparatus of the character described which will afford adequatefacilities for controlling the formation and delivery of the chargesobtained from glass fed from the supply body in the feeding containerthrough each of the feed outlets to permit predetermination andselection of the size and shape of such charges from a range of sizesand shapes sumciently extensive to include all those best suited to themolds of associate glassware forming machinerywhen the latter isemployed for the manufacture of glassware of any usual size and shapefor which such machinery is adapted and to maintain commercialuniformity.

of the successive charges of the series produced for each feed outletand of corresponding charges of the several series despite. differentialcondi tions and variations therein existing or occurrin at or adjacentto the several outlets and tending to prevent or impair such uniformity.

A glass feeding apparatus for accomplishing. the'foregoing and otherobjects of the invention includes many novel and improved features,among which are those whichare concerned with controlling the dischargeof glass from the several feed outlets, suspending the glass issuingfrom such outlets insuspended -mold charge masses, separating moldcharges from the suspended masses and delivering the charges obtained toassociate forming machinery.

An improved mechanism is provided according to the present invention forcontrolling the flow of glass to and through the feed outlets so thatlike charges may be obtained from glass issuing from the several outletsdespit'v riations in the temperature and viscosity 0 the glass atdifferent outlets or at different parts of one or more of the outlets. I

A further feature of improvement is the provision ofnovel outletstructure and temperature control means in conjunction therewith forpreventing the mold charge masses issuing'from and accumulating insuspension below such out lets from canting or warping laterally fromthe vertical.

The invention also provides improved mechanisms for severing glasscharges from suspended mold charge masses below the several outlets andfor controlling the delivery of the several charges produced at eachcycle ,of 'operations of the feeding apparatus to the mold cavities forwhich these charges are intended.

fl'hese and other features of the invention will be understood from thefollowing description of a glass feeding apparatus embodying theinvention and of several alternative or modified partly in verticalforms of improved mechanisms which may be included therein, as shown inthe accompanying I drawings. in which: Fig. 1 is a view,

Fig. 2 is a fragmentary relatively enlarged view, showing a portion ofthe glass feeding contamer with plural feed outlets and a reciprocableplunger and associate tube for. controlling the feeding of glass to andthrough said outlets,

together with structure for operatively supporting the plunger and tube;

Fig. 3 1s a longitudinal vertical section through portion of the feedingcontainer, I showing an improved mounting mainly in side elevation andsection, showing-- an assembly of component mechanisms of the improvedglass feeding apparatus;

' a be Of any suitable for adiustably' supporting the glass severingmechanism;

'- Fig. 4 is a plan view of one form of outlet structure contemplated bythe present invention;

Fig. 5 is a transverse vertical section through the outlet structure ofFig. 4, substantially along the line 5-5 of Fig. 4, I 1

Fig. 6 is a transverse vertical section through the same outletstructure, substantially along the line 6-6 of Fig. 4; I

Fig. 7 is a plan view of another form of outlet structure contemplatedby the invention;

Fig. 8 is a section along the line 8-8 of Fig. '7;

Fig. 9 is a fragmentary vertical sectional view 01 a portion of theglass feeding container, including the-form of outlet structure thatalso is shown in Figs. 4 to 6, inclusive, and also showin one term orreciprocable plunger which may be employed in conjunction therewith;

Fig. 10 is a bottom plan view oi the plunger shown in Fig. 9 with theunderlying outlet structure indicated by dot and dash lines;

Fig. 11 is a view similar to a diflerent form of plunger;

Fig. 12 is a view similiar to Fig. 10 but showing 'theiorm plunger ofFig. 11;

Fig. 13 is a view similar to Figs. 9 and 11, showing a still diflerentform or plunger and the form oi'outlet structure of Figs. 1, 2 and 3;

' Fig. 14 is a view similar to Figs. 10. and 12,

7 showing the bottom end of the plunger of Fig. 13;

Fig. 15 is a view similiar to Figs. 9, 1'1 and 13 but showing the formor plunger and the outlet structure of Figs. 1, 2 and 3;

' Fig. 16 is a viewsimilar to Figs. 10, 12 and 14 but showing the bottomend of the plunger of Fig. 17 is an edge view of the shear bladesshowing certain details of .the holders for such blades;

Fig. 18 is a plan view of the shear mechanism;

F18. 19 is a plan view showing one of the shear arms and the associatemechanism for adiustably supporting and operating a pair of charge guidismembers; and

Fig. 20 is a view showing details of a portion of the mechanism foradiustablysupporting and operating one ,o! the charge uiding members.

Generalconstruction and operation of the iorehearth flow channel isindicated at 3! in Fig. 1. The glass container 36 may be formed or anysuitablerefractory material and may be provided at its exterior withsuitable insulation, 60

indicated at 32.

In general, and except as to novel features which will be pointedout,'the glass container and the means for supplying molten glassthereto known or preferred construction. One form or iorehearthstructure of this description is disclosed in Patent No. 1,760.-- 4.ranted May 2'7, 1930, to Karl E. Peiler, assignor to The Hartford-EmpireCompany.

The glass container 36 is provided with a verti 7 cal opening 33 in itsbottom. the vertical extent or which is sufllcient to provide adischarge or feed well or flow passage or substantial depth. An outletring 34 is located at the bottom or the container at the lower end ofthe well 33. This Fig. 9 but showing outlet ring is formed according tothe present invention to provid a plurality of adjacent reed orifices.In the example shown, there are two of these orifices, designated 35 and36, respec- 5 tively, spaced along a line running from the rear orreceiving end 01. the container 30 to the front or outer end thereof. Inthe practice of the invention, a supply body of molten glass 31 in thefeed chamber continuously submerges the well 33 and the orifices 35 and36 and is maintained at a substantially constant level.

The container 30 may be provided with a cover structure 38, providedwith an opening such as that indicated at 39, Fig. 1, to accommodate avertically reciprocable refractory plunger 40 and a stationary butvertically adjustable refractory tube 4!. The lower end portions of theplunger 40 and tube 4| depend into the glass supply body 31 in desirablerelations to the well 33 and the feed orifices 35 and 36.

The cover structure 31 is shown as having lateral openings, as at 42, 43and 44, above the level of the glass supply body, for accommodatingburners (not shown). It is intended that the glass in the feed chamberand passing through the discharge well 33 to the orifices 35 and 36should be kept a nearly as possible at a desirable, selectedtemperature, suitable for the glass i'eeding operations, and as nearlyuniform in temperature and homogeneous as possible. To this end, anysuitable or preferred temperature and viscosity regulating or controlmeans may be employed.

Glass is fed from the supply body through the orifices 35 and 36 so asto produce successive suspended moldv charge masses below theseorifices. Charges,such as those indicated at 45 and 46 in Fig. 1 aresevered from the suspended mold charge masses at regular selectedintervalsof time by the blades of a shear mechanism, indicated at 41.The charges are steadied and guided at the timeof their severance by amechanism 46 associated with the shear mechanism, both of which willhereinafter be further described.

45 The charges 45 and 46 are intended for the cavities 48 and 56 of aplural-cavity mold 5i. These cavities maybe in separate molds. The moldsmay be included in any suitable or preferred associate forming machine(not shown). These charges may be guided to their respective moldcavities by suitable delivery troughs 62 and 63, respectively. Each ofthese troughs may comprise a plurality of longitudinally spaced sectionswhich individually are of suitable construc- -66 tion to receive thefalling charge when its axis is substantially verticaland to deliver thecharge vertically to its mold cavity when thelatter is located at alower level and at a substantial distance laterally from the axial lineof the feed orifice through which the glass of the charge wasdischarged. All the details of the trough mechanisms are not shown asthey may beof any suitable known design and construction. For example,each of the trough mechanisms may be substantially like that which isdisclosed in Patent No. 1,911,119, granted May 23, 1933, to Henry W.Ingle, assignor to The Hartford-Empire Company. If the operatingassembly of the .ieeding apparatus and its associate forming machinewill permit, the charges may be delivered vertically downward to theirmold cavities, either freely through the airor by the use of anysuitable known guiding means.

In general, the feeding of the glass from the supply body through thewell 33 and the orifices 35 and 36 usually will be intended to producefor each cycle of operations of the feeding apparatus and at regularintervals a pair of charges of iden tical, selected shape and weight andof like thermal condition or consistency, suitable for the mold cavitiesto be charged. The delivery mechanism should be effective to deliver thecharges properly to their respective mold cavities. In actualpractice,many factors, including temperature differentials between differentportions of the glass being fed, unavoidable and unpredictablevariations in the temperature and viscosity of different portions of theglass passing to and through the diflerent orifices, difierent orvarying external influences on different portions of the glass massespassing through and issuing from the difierent orifices, charge severingand guiding difliculties, etc., militate against satisfactory feeding ofsimultaneously produced and simultaneously delivered identical pluralcharges uniformly in regular cycles throughout an operating period ofsubstantial duration and in such manner that the Weight and/or shape ofthe plural charges may be changed at will within wide ranges as serviceconditions may require and be dependably maintained after each suchchange. The present invention eliminates or substantially reduces thedifilculties caused by or incident tothese factors by providing improvedindividual and combined or cooperative features of construction andoperation of the complete feeding apparatus, whereby harmful or adversefactors or changes in operating conditions are more efiectuallycontrolled, obviated or compensated for. The several components of myimproved feeding apparatus will now be described. Mechanism forcontrolling feeding of glass to and through the orifices A plungeradjusting and operating mechanism is shown in Fig. 2. It includes achuck or holder 54 having at its upper end an enlarged or flanged headportion 55 rotative y supported, preferably anti-frictionally, in acounterbore seat or socket 56 in the outer end portion of a carrying arm51' and retained therein by a clamping device 58.

The carrying arm 51 is reciprocable vertically by means adequate topermit adjustment vertically of the position and also adjustment of theamplitude of the plunger stroke or either of them. The arm 51 isadjustable horizontally in the direction of length thereof and also inopposite directions substantially at right angles to such direction. Toreciprocate the plunger in such manner as to permit these adjustments orany of them, the carrying arm 51 may be supported and operated bymechanism substantially as disclosed in Figs. 15, 16, 22 and 23 of thePeiler Patent No. 1,760,254, aforesaid. This structural arrangementincludes a vertically reciprocable guided shaft 59, the upper endportion' of which extends through a slot 60 in an intermediate portionof the arm 51. The shaft 59 carries a rearwardly extending bracket onwhich the intermediate portion of the arm 51 is slidably supported andto which such portion of the arm is releasably clamped by a clampingmember 59a. The bracket 6| carries a vertical post 62. A square collar63 surrounds the upper end portion of the post 62 and is connected by a.horizontal hinge or pivot pin 64 with the rearward end of the plungercarrying arm 51.: Lat' eral hand screws, one of which is indicated at 65and a rear hand screw 66 are journaled in the overlapping end portionswalls of the collar 63 at right angles to one another, and are threadedinto the post 62. These hand screws may be adjusted when the clampingmember 59a has been loosened to adjust the arm 51 relatively to the aXisof the shaft 59 in a fore or aft direction or angularly about such axisin either of opposite directions. The plunger 40 thus may be centered inrespect to the well 33 or may be adjusted fore or aft in such well orlaterally in either direction therein. Further details of the mechanismfor supporting and operating the plunger, including adjustments forvarying during operation either the vertical position of the plungerstroke or the amplitude thereof are fully explained in the aforesaidPeiler Patent No. 1,760,254.

For rotary adjustment of the plunger, as may be desirable when plungersof a certain shape or certain shapes are employed, as hereinafterexplained, a mechanism substantially as shown in Fig. 2 may be employed.This mechanism includes a beveled gear 61 engaging with teeth 60 in theupper annular face of the flange portion of the head of the chuck orholder 54. The gear 61 is operable by a handle 69 and an interveningextensible jointed shaft l0. Any suitably known structural arrangementmay be employed to support the mechanism for operating the gear 61 sothat such mechanism will not interferewith vertical reciprocatorymovements of the plunger 40. One such arrangement is shown in Fig. 2 inwhch the handle 69 is a crank having its axle journalled in a stationarysupport 200. The shaft 10, which is pivotally connected at one end withthe axle of the crank 69 and at its other end with the axle or shaft ofthe gear 61. comprises sections having telescopically engaged with eachother, as indicated at 20 I These are of course suitably shaped incross-section to permit relative longitudinally sliding movementsbetween such sections as the plunger 40 is raised and lowered whilepreventing relative rotary move ments between them at all times. Inorder to perfor the tube 4| ations.

mit such angular adjustment to be made during operation so that theeffects thereof may be observed, the clamping device may be such as toretain the chuck or holder in its seat in the arm 51 by pressure exertedon the head of such chuck or hol der through a ball bearing member 58alocated at the upper end of the vertical axis of the chuck or holder.

The tube 4| may have a flanged upper end porouter end portion of a.supporting arm 1 I. This supporting arm may be secured to a verticallyadjustable shaft 12 so that the tube 4| may be lowered onto the curb atthe upper end of the well 33 completely to shut off the flow of glassfrom the supply body to the well or located with its lower end at anyselected distance above the upper end of the well so as to. provide asubmerged annular flow passage 13 of a predetermined heighth at theupperend of the well. The structure for supporting" and adjustablymounting the tube 4| may be substantially as disclosed in the aforesaidPeiler Patent No. 1,- 760,254. If desired, the supporting mechanismcause rotation thereof during glass feeding oper- Suitable are wellknown in the art of feeding molten glass.

Plungers having lower end portions of various shapes and sizes may beused in the feeding of molten glass from plural orifices in accordancewith the present 15 and 16 the lower end portion 14 of the Plunger maybe suitable to permit or means for rotating such a tube invention. Asbest seen in Figs.

4ll,hereinbefore referred to, is beveled or cut-away zontal adjustmentsof the plunger 40a will not at its front and rearward sides, asindicated at substantially change the shape controlling efiects 15 and18, respectively, so as to be wedge shaped of the plunger strokes.

as viewed from the side. The beveled front and In Figs. 11 and 12, Ishow a plunger 40b havrear face portions I! and I6 are similarly grooveding a lower end portion 14b of a still different vertically intermediatetheir side edges, as at 11 shape. The portion 14b of the plunger 40b hasand I8, respectively, preferably to such an extent its frontfacebeveledor cut away, as indicated that the lower end of the plunger 40 will notoverat 82. but y be Otherwise O circular. Configulie the orifices 35 and36 of the orifice ring 34 ration. Asshown, the lower end 83 ofthe'plunger when the plunger 40 is centered in the well 33. 40b overliessubstantially the entire rear orifice, With this construction, the downstroke of the designated 84, of an-outlet ring 85 and relatively plunger40 acts to expel glass from the orifices 35 very little of the frontorifice 86 of such outlet and 36 without exerting any force in astraight ring when the plunger 40b is centered in the vertical line onany portion of glass in either of I well 33. This centered position ofthe plunger the orifices. The arrangement just described ob- 15 40btends to permit greater fl w f glass downviates any impelling action onthe glass dischargwardly through the orifice 86 in a given time ing fromthe orifices of a character to cause fore than through the orifice 84,assuming glass of and aft canting or curvature away from each liketemperature and viscosity at both the front other of the accumulatingsuspended mold charge and rearward sides of such plunger. However,masses. This is of substantial advantage in the the greaterdirectimpelling action of the plunger feeding of glass from a pluralityof adjacent orion the glass in the orifice 84 tends to force more ficesin order to obtain straight mold charge glass downwardly through thisorifice than masses in suspension from such outlets, such, for throughthe orifice 86 during at least part of each example, as those designated80 and SI, respecdown stroke of the plunger. The effect will varytively,and partially shown in Fig. 15. according to the position of theplunger relatively The plunger shown in Figs. 15 and 16 has the to thefront and rearward walls of the well 33 further advantage of being welladapted maid in and according to the vertical position of the providingregulable control and adjustment of path of the plunger strokes withrespect to the the weights of the mold charges which may be orifices andthe. character of such strokes. By severed at regular, selectedintervals from succes- 3o uit le se ct n of ll these f r ol sive moldcharge massses in suspension from the charge masses of like size, weightand shape may feed orifices. Thus, if the glass passing downbeconcurrently produced.' When a plunger havwardly to the front orifice 35should become cooling a lower end portion of the shape shown in er andmore viscous than the glass passing to the Figs. 11 and 12 is used,particularly for the prorear orifice 36 and hence tend to producecharges35 duction of charges within the range of smaller of lighter weight, theplunger maybeadjusted sizes, it is preferable to make use of special ina rearward direction from a centered position [glass temperature controlprovisions in conjuncin the well 33. This will enlarge the down pastionwith the outlet ring." The outlet ring 85 sage for molten glass to thefront orifice and cortherefore is shown as differing from the outletrespondingly reduce the size of the down passage 40, ring. 34 infeatures pertaining to its heat dissito the rear orifice. Like suspendedmold charge Dating or conducting characteristics. It is sufmasses maythus be obtained below the respective ficientat this point'to note thatthe outlet ring orifices between successive operations'of the as- 85 isprovided with a transverse bottom groove sociate severing mechanism.This fore or aft or or. recess. in the division wall thereof betweenother horizontal adjustment of the plunger 40 {5 the orifices and that acooling device 90 is-promay be effected without causing any substantial.vided in conjunction therewith for retarding loss change in the effectof the plunger strokes on the of heat from the glass through thedivision wall.

shape of the suspended mold charge masses and The plunger 40b preferablyis operated at a hence independently of a change of shape of theslightly higher level than the plungers 40 and severed'charges; 40a whenused for the production of charges of The vertical position of theplunger and the any. given size. 1 amplitude and character of itsstrokes may be ad In Figs. 9 and 10, I show a plunger 40c having iustedand selected according to the 'eifects'de a lower end portion 14c ofstill another type.

sired and may bedifierent for charges of different The portion 14c ofthis plunger may be circul sizes and/or shapes. j in cross section andis formed with a round A plunger 44a having a lower end portion 149lower end. such as that indicated at 9|. The of modified-formandaffording some of the ads plunger 40c acts uniformly on the glasspassvantages 0117116 plunger 40 is shown in Figs. 1; .ing downwardly toboth thefront orifice 86 and and 14. The plunger 400 thus has a wedge.the rear orifice 44 of the associate outlet ring 05 shaped lower end asviewed from the side and so and also provides similar vertical passagesfor differs from the plunger 40 only in that it lacks flow of glass fromthe supply body downwardly the vertical grooves I1 and II, respectivelyof to these orifices when the plunger 400 is centhe plunger 40.. Thelower end of the plunger 40a tered in the well 33. Adjustment of theplunger is, however, sufilciently reduced in thickness that 40c fore oraft to regul bly control and equalize it will not exert objectionabledirect extrusive weight of'the charges obtained may be-made usepressures on the portions of glass next to the of without substantialchange of the shape condivision wall 19 between the orifices when thetrolling effect of the down stroke of the plunger plunger is centered inthe well 33. The plunger on the charge masses in suspension below the44d may be adjusted fore and aft to adjust the respective orifices inview of the rounded con- .efiective relative sizes of the vertical glassflow figuration of the lower end of such plunger. As

passages at its front and at the read sides, reindicated, an-outlet ringhaving special coolspectively, to'regulably control the weight of the"ing provisions for its intermediate portion is prerespective moldcharge masses in suspension ferred for use in conjunction with theplunger c from the orifices, substantiallyas explained for as in thecase of the plunger 40b. Also, the

the plunger 40. Most fore or aft or other horiu plun er 40c Pref r ly ier t a h her a level than either the plunger 40 or 400 for controllingthe feeding of glass to produce charges of any given size.

Outlet ring structures As previously explained, I prefer and it is ofadvantage at times, to use outlet rings of difierent structures andhaving difi'erent heat conducting characteristics. The outlet ring 34 isa refractory member which forms a slightly tapering bottom extension ofthe well 33 and has the orifices 35 and 36 formed in the bottom thereof,the division wall between these orifices comprising only the refractorymaterial of which the outlet ring is composed.

The outlet ring 34 may be mounted within an outer metallic casing 92,Figs. 1, 2, 3, 13 and 15, which confines insulation 93 against therefractory ring except at the division wall 19 between the feedorifices. The shell or casing 92 fits in a seat in an arm 94 whichishinged at 95, Fig. 3, to the metallic casing or shell of the glassfeeding container. The arrangement permits the outlet ring structure tobe swung as a unit to and from its operative position. A latch 96 is,adapted'to engage with a depending lug on the rearward end of the arm 94to retain the outlet structure in its operative position. An indexingpin 91 on the arm 94 engages an opening in an ear 98 on the outlet ringshell 92 to indicate and maintain the appropriate position of theorifices as and at with relation to the other parts of the feedingapparatus. As shown, these orifices are in line fore and aft of the feedchamber.

The outlet ring,85, hereinbefore referred to as preferred for .use withthe plunger 406 or plunger c,-is shown in detail in'Figs. 4 to6',

inclusive. This outlet ring fits in a shell 92a which, like the shell92, is adapted to be mounted in the arm 94. The transverse groove orchannel 09 in the division wall between the orifices 06 and 04 is cooledby air or other cooling fluid from a nozzle 99 which is formed on-acasting I00 in the bottom portion of theshell 92a. The

casting I00 has a passage IOI for-conducting cooling fluid to thenozzle'99 which may have a and 84a substantially as has been describedin connection with the orifice ring 85. However, in this instance, thechannel 89 is filled with insulation, indicated at I01 in Fig. 8,similar to that employed to fill the remaining spaces in the shell I08around the refractory outlet ring. In this instance, the bottom of theshell is suitably formed to retain the insulation I01 in the channel89a. The shell I08 otherwise may be the same as or not substantiallydifferent from the shells 92a and 92, being designed to be carried bythe pivoted arm 94 like either] of the other outlet ring structures.

The outlet ring structure shown in Figs. '7 and 8 is effective to reduceloss of heat from the glass at the outlet to a, minimum both through theoutlet ring walls at the remote sides of the orifices and through thecommon division wall between such orifices. This outlet ring structurehas advantages under certain operating conditions, as when the feedingapparatus is being employed to produce relatively small charges andparticularlyto prevent unduly protracted and extensive clogging oftheorifices by "frozen" glass when flow therethrough has been stoppedtemporarily .for any reason.

for the front feed orifice and a pair of upper and lower blades II I andH2, respectively, for the rear feed orifice. As best seen in Fig. 18,these blades preferably are V-edged. The blade H0 is secured fixedly byits slotted portions and fastening devices II3 cooperative therewith toa lateral arm I I4 on a holder H5. The blade II 2 4.5 bearing portions202 in which rest convexlyplurality of upwardly facing dischargeorifices I02. The bottom of the shell 92a may beopen at- I03 beneaththenozzle 99 to permit exhaust or draining away of the cooling fluid. Thecast! ing I00 may have up-turned lugs or projections as at I04, fillingthe spaces at'the .ends. of the cooling channel 99 to prevent entranceof loose granular insulating material, indicated at I05 into the coolingspace. Cooling fiuidmay be supvertically about an axis H0, Figs. 17 and18, extending longitudinally of the holder 5. The

holder 5 is provided with spaced V-shaped curved bearing portions 203 ofthe cap I". Cap screws 204 extend through clearance openings In theholder 5 and are threaded into open- Ings in oppositely extendinglateral ears 205 onthe cap I". When one of the cap screws 63 dependingon which of the cap screws 204 is.

plied to the cooling passage IM and thence to the nozzle 99 from anysuitable source of supply, represented by a supply pipe I06'which isconnected with the casting I00 through a suitable opening in the side ofthe shell 92a. Regulable cooling of the division wall between theorifices 204 is loosened andthe other tightened, .the cap I I1 and theblade II2 will be rocked as a {unit in the bearing portions 202 of theholder 5 about the axis H8 in one direction or the other,

loosened while the other is tightened. The-holder II! has anend shank 5asecured in place in a socket in the outer end portion of the shear arm9; Y

59 Both the upper shear blades I09 and III are may be made use of to,oppose or overcome the:

tendency of the glass in the portions of the orifices adjacent to suchwall to run hotter than the glass adjacent to the opposite walls of theorifices. Thus, the outlet structure shown in Figs. 4 to 6, inclusive,maybe utilized toobviate or cure a. condition which otherwise wouldresult in the canting of the successive accumulating mold charge massesforwardly and rearwardly as such masses accumulate in suspension belowthe feed orifices.

' 3 Figs. '1' and 8 illustrate another form of outlet structure. Anoutlet ring 05a has a transverse v bottom channel 090 between theorifices 00s adiustablysecured by slotted portions thereof and fasteningdevices 2I9 and I20, respectively, to lateral arms I2Ia and I22a,respectively, of cap members I2I 'and I22, respectively. These capmembers are fastened to a shear' holder I23 so that blades I09 and IIImay be adjustably rocked about horizontal axes I24 and I20.respectively, each of which extends at a right angle with'the directionof length'of the holder I23. The bearing and fastening means emp flyedto. mount each of the cap member's -I2I. and I22 on the holder I23 issimilar to the means described in detail-for mounting the cap I" on theholder IIS except of course the cap I" is mounted 'for rockingadjustment about an I26 so that the holders H and I23 are substantiallyparallel when the blades are closed,

as. shown in Figs. 17 and 18.

The shear arms H9 and I26, respectively, are mounted to swing about theaxes of parallel vertical shafts I21 and I23, respectively. The hubportions of these arms may be provided with coengaging gears I29 andI30, respectively, so that swinging movement of one shear arm about theaxis of its pivotal support will effect like movement of the other armin the opposite direction and to the same extent.

The pivot shafts I21 and I23 for the shear. arms are supported in ahousing I3l, Figs. 1 and" 3, which is pivoted intermediate itsheiehthatits inner side by a horizontal pivot shaft I32; Fig. 3, to a slide blockI33 which is adjustable vertically in a slideway I34 in a front wallportion of the casing of the glass feeding container. The verticaladjustment of the slide block I33 of its holder or substantially atright angles with' the rocking movement of the blade II2 permits therear blades to be set for proper cutting contact at opposite sides ofthe apices of their edge portions when these bladesare closedconcurrently with the front blades I03 and H0. Tov compensate fordiflerent slight variations in the edge portions of the blades,resulting from grinding of the blades of one pair more than the bladesof the other or of one blade of a pair more than the other blade of thesame pair or some generally similar cause, the blades of each pair canbe independently adjusted edgewise relatively to one another -by meansof the slotted connections of such blades with their carrying arms. Thisadjustment is in addition to and in dependent of the main overlapadjusting mechandhence of the housing I3I and the entire,-

shear mechanism as a unit may be efiected by manipulation of anadjustable retaining screw I35. The shear mechanism may be tilted aboutthe axis of the horizontal shaft I32 to raiseor lower the shear bladesfor the rear feed orifice above or below the shear blades for the frontorifice when these shear blades are at their cuttin positions beneathsuch orifices. This tilting adjustment may be effected by manipulationof cooperative adjustable fastening devices I" and I31, whichrespectively are provided between the housing I3I and the slide blockI33 below and above the level of the pivotshaft I32. Of course.

these adjustable devices may be manipulated or set to maintain the frontand rear shear blades at the same level and this is the usualornormalset-- ting of such blades. 7 The distance below the ori- .fice at whichthe blades will sever charges from the suspended mold charge masses willbe deter mined principally by vertical adjustment of the entire shearassembly, including the slide block I33. The tflting adjustment of theshear blades may be utilized to compensate for the diflerent rates offlow of glass from the respective orifices so that charges of equalweight will be severed from the suspended mold charge masses by thesimultaneous action of the front and rear pairs of blades despiteslightly unequal lengths of the respective suspended charge masses.

- The pairs of shear blades should cut cleanly through the suspendedcharge masses simultaneously. The fastening means described by which theblades are secured to their respective V holders and by such holders tothe shear arms permits rocking of the upper-rear blade I" about an axisextending at a right angle with the tingedge of such blade contactsuniformly at opposite sides of the apex of its cutting edge ,with likeportions of .the edgeof the cooperative axis at right miles rockingadjustment of the cooperative upper rear shear blade-Ill about an withthe longitudinal axis direction of length of'its holder untllthe'cutvanism (not shown) of the shear mechanism;

Except for the features which have been particularly pointed out,relating to the provision of the separate pairs of shear'blades for thefront and rear feed orifices, respectively, and the novel adjustablefeatures of the connections between such blades and their holders andthe structural provisions by which the entire shear mechanism, except aslide block I33, may be rocked about-the, axis of the shaft I32, theshear mechanism may be substantially like that which is included in thewell known Hartford single feeder and is fully disclosed in Patent No.1,'l60,435, granted May 27, 1930, to Karl E. relief, assignor to The Wrelative vertical adjustments between the two shear arms, and thereforebetween the elements respectively carried thereby, to produce thedesired tension of the edge portions of the blades of each pair oneachother during severing operations, means for adjusting simultaneously andin unison the overlap of the blades of the respective pairs at thecompletion of the swinging movements of the shear arms toward eachother, and means for effecting repeated swinging movements of the sheararms toward and away from each other as required to effect suitablytimed periodic cutting operations by the shear blades.

Mechanism for steadging and guiding the charges.

, This mechanism is. shown best in Figs. 19 and 20. It comprises a pairof levers I33 and I39, 'respectively, both iulcrumed at I40 on avertical pivot shaft carried by the shear arm I23. This is the shear armwhich supports and operates the upper shear blades. The outer endportions of the levers I38 and I33 carry anti-batting guide members Iand I42, respectively, for steadying the charges severed from successivecharge masses in suspension below the front and rear orifices. Each ofthese guide members preferably is of arcuate shape. as viewed in plan,to corresb nd approximately to the lateral shape of the portion of thecharge to be contacted by such guide member during the severingoperation.

Eachguide member has a shank I43 securedfas by a'fastening device I,to'one arm I43 of a bell crank lever I43 which is fulcrumedat I41 on avertical pivot pin carried by the free end portion of the lever I33 orthe lever. I33. The other arm.

indicated at I43. of the bell crank lever has an upward projection I43,whichmay be,a pin, ex-

tending between flanges I30 and III, respectively, onan inner sleeve I52and an outer sleeve I33. The sleeve I33 threadedly engages 'wscrew I34,carriedbwadownturnediiangeorlug Illonthe lever I38 or the lever I39. Ahand wheel I56 is provided on the free end of the sleeve I52. Acompression spring I51 encircles the sleeve I53 and bears at itsopposite ends against the flange II and the hand. wheel I56,respectively. Each guide I4I or I42 may thus be independently adjustedabout the axis of its pivotal connection with its supporting lever, I38or I39, and at the same time the adjusting means allows the guide toyield under an abnormal stress. Thus, by tuming the hand wheel I56, thesleeves I52 and I53 are adjusted as a unit about the axis of the screwI54 and relatively to the supporting lever, I30 or I39. In the event ofabnormal stress on the face of the guide, I4I or I42, the resultantabnormal pressure of the pin or projection on the arm I48 of the bellcrank lever against the flange I5I of the sleeve I53 will drive thelatter rearwardly against the action of the spring I51 and thus permitthe guide to swing momentarily away from its normal adjusted position.

Each lever I38 or I39 is adjustably connected .at its rear end with thesupporting shear arm. The constructionshown for the upper lever I38 inFig. 19 is duplicated for the lever I39 so that the description of therear end portion of the lever I38 will sufiice also for thecorresponding portion of the lever I39. As shown, the rear end portionof the lever I38 comprises horizontally spaced branches I50 and I59,respectively. An adjusting screw I60 is threaded through the outer endportion of the branch I59 and bears against an abutment plate I6I whichis carried by the adjacent portion of the lever arm I26. A compressionspring I62 is disposed between the branch I58 and the ad acent side ofthe plate I6I, being retained in-place by a projection I63 on the plate.The adjusting screw I60 is provided with a suitable operating rod, aportion of which is indicated at I64, operable at a distance from theshear mechanism and during the operation thereof, as in the case of theoperating rod I52 of the mold charge guiding means shown in Fig. 1 of myprior Patent No. 1,915,339, granted March 6, 1934, to me as assignor tothe Hartford-Empire Company. The adjustment of each guide I or I42 thatcan be efiectedby the adjusting screw I60 will dispose the guide in apredetermined relation to the cutting edge of the associate upper shearblade so that the guide will steady and guide each glass charge at thetime of its severance and oppose the tendency of the cooperative lowerblade to bat the charge laterally as it is severed. This adjustmentpermits the use of the same guide during the production of charges of awide variety of sizes.

' adjustment by the screw I60.

The adjustment may be made with extreme accuracy and precision, wherebythe ultimate positions of the guides may be finely adjusted and variedwithin wide ranges. This is of practical importance and of decidedutility in the operation of apparatus by which a plurality of chargesare to be severed at the same time from adjacent suspended mold chargemasses and the severed charges properly delivered to the mold cavities.of associate glassware forming machinery.

1. Glass feeding apparatuscomprising a glass portion and a plurality ofadjacent feed orifices at the bottom of said well, a vertical refractoryimplement depending into said well in spaced relation with the wallsthereof for controllingfiow of glass to and through all of said feedorifices, means for adjusting said implement horizontally in a pluralityof different directions selectively, including directions extendingsubstantially at right angles with each other, and means for adjustingsaid implement angularly about its vertical axis. 0 I

2. Glass feeding apparatus comprising a glass feeding container having awell in its bottom portion and apair of adjacent feed orifices at thebottom of said well, a vertical refractory implement depending into saidwell for controlling flow of glass to and through all of said orifices,said implement having its lower end portion beveled downwardly at thesides thereof next to said glass to and through said orifices, saidimplement having its lower end portion beveled downwardly. at the sidesthereof next to said orifices and having vertically extending grooves inthe beveled faces thereof above said orifices, andmeans for adjustingsaid implement horizontally to vary the positions of the oppositebeveled and grooved faces of the lower end portion of relatively'to theadjacent orifices.

4. Glass feeding apparatus comprising a feedsaid implement in'gcontainer having a well in its bottom portion and a pair of adjacentfeed orifices at the bottom of said well, a vertical refractoryimplement depending into said well for controlling flow of glass to andthrough both of said orifices. said implement having its lower endportion beveled downwardly toward the vertical axis of the implement atthe side thereof next to one of said feed orifices, and means foradjusting said implement horizontally to vary the position of thebeveled face of said implement in respect to the adjacent orifice.

5. Glass'feedi'ng apparatus comprising a glass feeding container havinga well in its bottom portion and a pair of adjacent feed orifices at thebottom of said well, said orifices being spaced apart by a division wallconstituting a portion of the bottom of the well, a vertical refrac oryimplement reciprocable in the glass inthe container to control flow ofglass through both of said orifices, said implement having its lower endportion beveled at the sides thereof nearest to said orifices and havinga lower end surface of suitable size and shape to overlie the divisionwall between the orifices without overlying said orifices when theimplement is centered in the well, whereby said implement will exertflow accelerating impulses on the glass at. all of. said orifices bypressure exerted through the glass in the well when the implement ismoving downward in substantially co-axial relation with the well.

6. Glass feeding apparatus comprising a glass feeding container having awell in its bottom portion, an outlet ring located at the bottom of saidwell and having a pair of adjacent feed orifices therein. averticallyreciprocable plunger defeedmg container having well in tbottom pending into-the well whenthe plunger is at the lower end of itsstroke for controlling flow of glass to and through both of saidorifices, means for -reciprocating the plunger, means for adjusting theplunger horizontally in relation to opposite walls of said well, andmeans for locally cooling only the portion of the outlet ring that islocated between said orifices.

7. Glass feeding apparatus comprising a feedmolten glass may issue andaccumulate in suspended mold charge masses, separate pairs of shearblades for the respective orifices and means for mounting and operatingall said pairs ofblades in unison to cause each pair of bladesperiodically to sever a charge'from the mass of glass in suspensionbelow its particular orifice, means for adjusting the distance fromtheir respective orifices of all the pairs of blades in unlson, andmeans for efiecting differential adjustment of the distances of therespective pairs of blades from their orifices.

9. Glass feeding apparatus comprising a feeding container having a pairof adjacent feed orifices in its bottom portion through which moltenglass may issue and accumulate in a pair of adjacent concurrently formedsuspended mold charge masses, pairs of shear blades individual to therespective feed orifices, a pair of pivoted shear arms supporting saidpairs of shear blades and swingable relative to each other periodicallyto close theblades of each pair to cut a charge from the mass of glassin suspension below its particular orifice, means for operating saidshear arms, means for relatively adjusting the blades of each pairindependently of the blades of the other pair, means for adjusting saidshear arms vertically in unison to vary simultaneously and to the sameextent the distance of the respective pairs of blades from theirparticular feed orifices, and means for tilting said shear armsvertically to vary to diiferent extents the distances of the respectivepairs of shear blades from their particular orifices.

10. Glass feeding apparatus comprising afeeding container having a pairof adjacent feed orifices in its bottom through which molten glass mayissue and form a pair of concurrently produced suspended mold chargemasses, severing mechanism operable periodically to sever charges fromsaid suspended mold charge masses, said severing mechanism comprising apair of cooperative relatively swingable pivoted shear arms and pairs ofblades individual to the respective orifices carried by said shear armsand operated thereby,.one of saidarms carrying the upper blades and theother arm carrying the lower blades of said pairs, and separate meansfor steadying and guiding the charges severed by the respective pairs ofblades from the respective suspended mold charge memes at the time ofseverance of said charges, said means forsteadyingandguidingthechargescomprisingapair of intermedistely pivotedlevers carried by the shear armfor the upper shear blades, :1 pair'oibell crank levers respectively mounted on the ends of said first named-levers adjacent to the pairs of shear blades, charge steadying andguiding. members carried by said bell crank levers,

means adjustably connecting the bell crank levers with said first namedlevers, and other means adjustably connecting the opposite end portionsof said first named levers with the shear arm on which said levers. aremounted.

/ 11. The method of feeding molten glass for the production of moldcharges which comprises superimposing a supplybody of the molten glassupon a pair of adjacent discharge orifices so that glass tends to flowby gravity from the supply body downwardly through said orifices, pe-

riodically modifying gravity fiow of glass through said orifices byreciprocating a vertical implement vertically in the glass above saidorifices so that the vertical path of reciprocation of the implement iscentered between the center lines of the two discharge orifices when thegravity fiow is symmetrical throughout the entire crosssection of thelower end of each discharge orifice and is the same for both dischargeorifices, and varying the relative gravity-flow modifying effects of thereciprocations of the implement on the glass at the several orifices tocompensate for diiferences between the rates of gravity flow 03. glassof the supply body downwardly toward said orifices by shiftinghorizontally the position of the vertical path of reciprocation of theimplement in the glass above said orifices.

12. The method of feeding molten glass from a parent body insimultaneously produced series of mold charges, the several charges ofthe respec-' tive series being similar in shape arid weight,

that comprisesfiowing glass downwardly from I the parent body around thelower end of a reciprocating discharge-controlling implement in aglass-discharge well and through aplurality of submerged orifices in thebottom of the well, regulably controlling the temperature and V18!.cpsity of the glass of the parent body flowing to said well in anattempt to cause like masses of molten glass, each containing at leastenough glass for a mold charge, to issuefrom and accumulate insuspension below the several orifices for each cycle of reciprocation ofthe implement,

severing mold charges from the pendant mold charge masses belowtheseveral orifices simul.-'

taneously at the ends of intervals of time of suflicient duration topermit said pendant charge masses to attain the desired shape and size,and shifting the reciprocating discharge-controlling implement laterallyfrom a,,centered position in the well in the direction and to the extentrequired to maintain substantial uniformity of weight of the severedcharges whenever differ- .ences between the downward fiow movements ofglass'from the parent body to said orifices would otherwise prevent suchsubstantial uniformity.-

13. The method of obtaining simultaneously a plurality of similar moldcharges, each of ap-" propriate' shape and weight. which comprisesvextruding molten glass through a plurality of adjacentorificessubmergedin a glass supply,

and so varying the extrusive pressures applied tothe different portionsof the glass above therespective orifices in accordance with variationsin the temperature and viscosity of such diiferent portions of the glassas-to cause like mold charge masses of the glass to issue from andaccumulate in suspension below the several orifices in agiven period ortime, and severing like mo'ld charges from said maseses simultaneouslyat the end of said period of time.

14. Glass feeding apparatus comprising a feeding container having a pairof adjacent feed orifices in its bottom through which molten glass mayissue and form a pair of concurrently produced suspended mold chargemasses, and severing mechanism operable periodically to sever chargesfrom said suspended mold charge masses, said severingmechanism'comprising a pair of cooperative substantially horizontalshear arms pivoted to swing toward and away from each other aboutadjacent vertical axes, pairs of blades individual to the respectiveorifices carried by said shear arms and operated thereby, therespectiveblades of said pairs extending laterally from the respective shear armsin' positions to be closed beneath and in line with the respectiveorifices by swinging movements of said arms toward each other, one ofthe blades carried by one of said arms being fixedly secured to thelatter, the other blade carried by the same arm being connected withsaid arm for rocking adjustment relative to the arm about an ,axisextending in the direction of length of said arm, and both the bladescarried by the second shear arm being connected with the latter forindependent rocking adjustments relative to said second arm about axesextending'approximately at right angles with the direction of length ofsaid arm.

15. The method of feeding molten glass in suecessive pairs ofconcurrently produced mold charges which comprises superimposing asupply body-o1 molten glass upon a pair or adjacent discharge orificesto cause flow of glass by gravity from the supply body downwardly to andthrough said orifices so as to accumulate in suspended mold chargemassesbelow said orifices, severing mold charges from the suspended moldcharge masses below said orifices when the suspended charge masseshaveattained the length desired,

and modifying gravity flow of glass from. said supply. body through saidorifices by causing diflerential extraction oi heatirom the glass in theportions of said orifices next to the inner andouter sides thereof,respectively, to compensate parent body around the lower end of avertically reciprocating discharge controlling implement in a glassdischarge well and through a pair of adjacent glass submerged orificesat the bottom of the well to produce below the orifices pairs ofsuspended mold charge masses, each containing at least enough glass fora mold charge, extracting relatively more heat from the glass passingdownwardly through the portions of said orifices next to the inner sidewalls thereof than from the glass in the portions of the orifices nextto.

the outer side walls thereof to prevent lateraloutward warping orcanting of the mold charge masses in suspension from said orifices, andsevering mold charges from the suspended mold charge masses below saidorifices.

17. The method of feeding molten'glass from a parent body in successivesimultaneously produced pairs of mold charges, the two charges of eachpair being similar in weight and shape, that comprises flowing glassdownwardly from the parent body around the lower end of a ver-' ticallyreciprocating discharge controlling implement in a glass discharge welland through a pair of adjacent glass submerged orifices at the bottom ofthe well to produce below the orifices pairs of suspended mold chargemasses, each containing at least enough glass for a mold charge,applying a cooling medium locally to the walls at the inner sides onlyof said orifices to prevent lateral outward canting or warping of theglass of the mold charge masses in suspension from said orifices, andsevering mold charges from the suspended mold-charge masses below saidorifices.

WILLIAM T. BARKER, JR.

